Ibn Mas'ud (May Allah be pleased with him) reported:
Messenger of Allah (ﷺ) said, "Envy is permitted only in two cases: A man whom Allah gives wealth, and he disposes of it rightfully, and a man to whom Allah gives knowledge which he applies and teaches it."[Al-Bukhari and Muslim]. (IT)
Arabic/English book reference (IT): Book 1, Hadith 571 (IT)